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'Furthermore, vaccinated and subsequently challenged cohorts failed to transmit the virus to naïve animals, demonstrating a *complete block of onward transmission*'. * my emphasis. Extraordinarily promising research.
Prof. Dr. Sanjeev Bagai
A single-dose amber codon carrying live attenuated vaccine elicits pan-sarbecovirus immunity and blocks SARSCoV2 transmission. live attenuated mucosal vac by introducing amber stop codons into accessory genome of SARS-CoV-2, result in highly attenuated- https://www.nature.com/articles/s41541-026-01540-7.pdf